package mask;

import java.util.Scanner;

public class Title2 {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		System.out.println("输入边长a");
		int a = scan.nextInt();
		System.out.println("输入边长b");
		int b = scan.nextInt();
		System.out.println("输入边长c");
		int c = scan.nextInt();
		if(b+a>c) {
			if(c+a>b) {
				if(c+b>a) {
					System.out.println("是三角形");
				}
			}
		}
		else {
			System.out.println("不是三角形");
		}
	}
}
